Which of the following is the most common type of lung cancer in the United States?
Non-small cell lung cancer (NSCLC) is the most common type of lung cancer, accounting for approximately 85% of all cases.
What is the characteristic histologic feature of Crohn’s disease?
Granulomas are a characteristic feature of Crohn's disease, often found in affected areas of the gastrointestinal tract.
Which of the following is the most common site of metastasis for prostate cancer?
Prostate cancer commonly metastasizes to the bones, particularly the spine, pelvis, and hips.
Which type of skin cancer is associated with the highest mortality rate?
Melanoma is the deadliest form of skin cancer due to its tendency to spread quickly to other parts of the body if not caught early.
What is the most common genetic mutation in colorectal cancer?
KRAS mutations are commonly found in colorectal cancer, particularly in the advanced stages, and are often associated with a poor prognosis.
Which of the following is the hallmark feature of hepatic cirrhosis on histopathological examination?
Portal fibrosis is a hallmark feature of cirrhosis, where scarring occurs around the portal tracts, leading to the disruption of liver architecture.
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What is the most common type of thyroid cancer?
Papillary thyroid cancer is the most common and least aggressive form of thyroid cancer, often diagnosed in younger patients.
Which of the following findings is most characteristic of a myocardial infarction on histology within the first 24 hours?
Coagulative necrosis is the hallmark of myocardial infarction within the first 24 hours, where the affected myocardial cells undergo necrosis due to ischemia.
Which of the following is a key histopathologic feature of Alzheimer's disease?
Neurofibrillary tangles, which are composed of tau protein, are a key histopathologic feature of Alzheimer's disease, along with amyloid plaques.